Mario's Bio reads, "In April of 2010, Detective Mario Oliveira was assigned to the ATF Task Force where he has been involved with the recovery of over forty stolen handguns and several arrests. On November 2, 2010 the team was conducting surveillance at a suspect's home who was known for running guns for gang members. When the suspect left the residence and got into his car Detective Oliveira, with his gun drawn, approached the driver's side of the vehicle and identified himself. At the same time an ATF agent approached the passenger side and a police officer approached the rear of the car. Immediately the suspect looked like he was getting out of his car, instead he opened fire hitting Detective Oliveira five times knocking him to the ground. The backup police officer and ATF agent returned fire striking the gunman and ending the threat. Detective Mario Oliveira began his career in law enforcement in 2000 as a police officer with the Somerville Police Department in Massachusetts. In his 10 years, Mario has become one of the most highly decorated police officers in the department. He has received the departments Officer of the Year Award, the Irish American Police Officer of the Year Award in 2008, the Post 19 Police Officer of the Year and Medal of Valor Award as well as the Chief's Achievement Award (three times). He has also received the Meritorious Service Award, Honorable Service Award, a Purple Heart, the Combat Cross and several Live Saving awards. Detective Oliveira is a proud member of the New England Concerned of Police Survivors."